Die-sinking or engraving machine



April 8, 1930.

J. E. JOHNSON DIE SINKING 0R ENGRAVING MACHINE Filed Npv. 19, 1928 2 Sheets-Sheet l April8, 1930. E. JOHNSON DIE SINKING OR ENGRAVING MACHINE Filed Nov. 19, 1938 2 Sheets-Sheet 2 MN m u z z zz zz mm mm mm, u NM QM W 1 Patented Apr. 8, 1930 JOHN E. JOHNSON, OF AURORA, ILLINOIS DIE-SINKING OR ENG-LEAVING MACHINE Application filed November 19, 1928.

This invention relates to that class of diesinking or engraving machines having a toolsupporting member and a guiding member mounted on a movable support andadapted to be moved concurrently in the operation of die-sinking or engraving or cutting according to a pattern, drawing or design.

The principal object of the invention is to provide a simple, economical and efiicien't 1o die-sinking, engraving or cutting machine;

and more particularly, to provide an improved machine having a tool-holding member and a guiding member or stylus mounted on a movable support and adapted to be moved concurrently, with the stylus in engagement with and adapted to be guided by a pattern, drawing or design, and the cutting tool in engagement with the material tobe cut or operated upon and adapted to be connected with suitable driving mechanism, for sinking dies or cutting or engraving or shaping material to be operated upon.

Other and further objects of the invention will appear from the following description and claim, and from an inspection of the accompanying drawings which are made a part hereof. 1

The invention consists of the features, combinations, details of construction and arrangement of parts herein described and claimed.

In the accompanying drawings Figure 1 is a plan view of an improved diesinking or engraving machine constructed in accordance with my invention;

Fig. 2 is a view in side elevation of the machine shown in Fig. 1, with a part of the tool-holder shown in vertical section;

Fig. 3 is a detail view in vertical section taken on line 3-3 of Fig. 1, looking in the direction indicated by the arrows; and

Fig. 4 is a plan view in detail of a movable supporting frame or carriage uponwhichthe upper tool-supporting frame or carriage is adapted to be movably mounted.

In constructing an improved. die-sinking or engraving machine in accordance with my invention, I provide a stationary bed or frame 1 which is, by preference, adapted to support the work 2 or material to be oper- Serial No. 320,420.

ated upon, and the pattern 3, both of which are mounted and firmly secured in rigid re-, lation to each other upona fixed support 4 which is rigidly secured in position upon or may be secured in adjustable relation to the bed 1 by the usual headed bolts 5 mounted in the bayonet-slotted horizontal flat top surface of the bed 1 and extending into suitable openings in perforated mar inal flanges 6 on said work-supporting mem er 4, or by any ordinary and Well known or suitable securing means. (See Fig. 2.)

A main stationary supporting base or frame 7 is secured to the bed 1 or other. suit able stationary support by means of bolts 8 which extend through suitable openings in the said 'frame or base 7 and into suitable openings in the bed 1, or by any well known or suitable securing means adapted to attach and rigidly hold the said base or frame 7 upon its support.

Supported upon the stationary base or frame 7which is, by preference, provided with aplurality of circumferentially grooved and flanged anti-friction guiding and supporting wheels 8 mounted on the ends of parallel horizontal axles 9 each of which extends through its supporting bearing and projects endwise beyond the opposite ends of y the latter in position to support said wheels 51 in pairs on opposite sides of the base or frame 7 and in alignment and spaced apart relation to' each otheris an intermediate or lower movable supporting frame or carriage 11 having one or more horizontal guide bars or tracks 12 each supported inthe aligned circumferentially grooved peripheral portions 13 and between the circumferential flanges 14 of a plurality of said aligned guiding and supporting wheels 8 onsaid frame 99 i or base 7. The frame or carriage 11 comprises, by preference, a pair of parallel horizontal guide bars or tracks 12 which are secured to a rigid main frame 15 and in rigid relation to each other, by means of bolts 16 in suitable perforations in said main frame and guide bars; The main frame portion 15 may be of cast metal and has projecting end portions 17 which are, by preference, integral with the central frame member 15 and project over and outward beyond opposite sides of the parallel guide bars 12. Mounted in these projecting end frame portions 17, 17 is a pair of ara-llel horizontal axles 18 which are, by pre erence, rotatively mounted in the projecting end frame portions 17 and in parallel relation to and outside'of the parallel guide bars or tracks 12 fixed to said main frame 15. Mounted on and by preference in fixed relation to and rotative with said axles 18 is a plurality of anti-frictionsupporting and guiding wheels 19 each provided with a circumferential peripheral groove 20 between circumferential peripheral flanges 21.

Each of the axles 18, projectsoutward endwise beyond the opposite side margins of the corresponding end frame portion 17 which forms'a bearing for such axle, and forms a support for a pair of said circumferentially grooved and flanged wheels 19 mounted on i the opposite ends of said axles respectively.

Rigidly secured to opposite sides of the main frame member 15 by means of securing screws 22 1s a pair of side frame members 23,, the

- opposite ends of each of which extends endwise beyond and adjacent to a corresponding end of one of said axles 18; and adjustably mounted in a screw-threaded opening in each end of each of said side frame members 23, in position to engage and form an end bearingfor and adjacent rotative axle 18, is an end-thrust bearing 24. These side frame members 23 and end bearings 24 are thus adapted to hold the parallel axles 18 and the circumferentially slotted and grooved guiding and supporting wheels 19 in accurately adjusted correct operative position, with the circumferentially grooved Wheels in proper alignment and properly spaced apart relation to each other on opposite sides of the frame or carriage 11, and in position to supor tracks 26 are, by preference, wedge-shaped.

and adapted to fitsnugly in and to move freely longitudinally in the aligned circumferentially grooved portions of the guiding wheels 19 and between the peripheral flanges 21, at right angles to the path of movement of the movable supporting frame or carriage 11. j

Mounted on and movable in a horizontal plane with and adapted to move or swing upward and downward with respect to the upper tool-supporting frame or carriage 25 is a vertically movable or titltable tool-supporting frame or arm 27 which is attached to said carriage 25 by suitable connecting means, such, for example, as a transverse horizontal pivot pin or axle 28 which is mounted in suitable perforated lugs 29 on or formed integrally with the frame arm 27, the opposite ends of said axle being mounted in suitable openings in the flanged side frame portions of the frame or carriage 25. The arm27 is thus adapted to be moved or tilted in a vertical plane upon the axis formed by the axle 28.

The forward extremity 30 of the vertically movable tool-supporting frame arm 27 projects forward beyond the frontmargin of the tool-supporting frame or carriage 25. and between upright guides 31 which project upward on opposite sides of and may be formed integrally with the side frame portions or guide bars 26 of said carriage 25; and antifrictionguiding rollers 32 are rotatively supported between the forked arm portions of upright bracket arms 33 on or integral with said vertically movable tool-supporting framearm 27, said rollers being. between and in engagement with the inner upright sur-. faces ofthe upright guides 31. Suitable guiding means is thus provided for guiding the tool-supporting frame arm 27 as it is moved ortilted'upon its horizontal axis formed by the axle 28, for the purpose of raising and lowering the tool.

A tool-holder or chuck 3.4 is, provided which, by preference, comprises a screwthreaded outer tubular member 35 which is mounted .in upright position in a screwthreaded bore or hearing 36 in the forwardly projecting portion of the upwardly and downwardly movable tool-supporting frame arm27. A rotative inner chuck member 37 having the usual tool-holding jaws 38 and means for clamping said jaws in releasable engagement with a tool, such, for example, as a drill 39 to be operated, is journaledin the upright bearing formed by the sleeve or tubular member 35 and provided with a belt pulley 39 fixed to the upper part of said rotative inner chuckmember, or other suitable means for connecting the rotative toolholding chuck member with an electric motor 40 or other suitable source of power. The motor 40 is, by preference mounted on the upwardly and downwardly movabletool-supporting frame arm 27 and operatively 0011-. nected with the rotative chuck member 37 by means of a belt pulley 41fixed to the driving shaft 42 of the motor, and a belt 43 mounted on and connecting said pulleys 39" and 41.

Mounted on the upwardly and downwardly movable frame arm 27 is an upright guiding pin or stylus 44 which is, by preference seated in and releasably held in fixed relation to a hollow upright screw 45 having tatively mounted on and movable with said 7 pivoted tool-supporting member, a guiding stylus on and movable with said pivoted toolsupporting member and adapted to engage a pattern for guiding the tool with respect to the material to be operated upon, and driving means on and movable with said carriage and connected with the tool, for rotating the same.

Signed at Chicago, in the county of Cook and State of Illinois this 14th day of November, 1928.

JOHN E. JOHNSON.

the tool 39 in any position to which the stylus is adapted to be thus adjusted.

The axis of the upright guiding stylus 44 and the axis of the upright tool 39 and the rotative tool-supporting member or chuck 37 are parallel; and said stylus and tool thus supported upon the same upwardly and downwardly movable tool-supporting frame arm 27 are movable concurrently in fixed parallel relation to each other in any desired direction in a horizontal plane to any desired position so as to cause the point of the stylus to engage any pattern at any desired point and cause the drill or tool to simultaneously engage and operate upon a corresponding or like part of the die or object to be operated upon; and said stylus and tool are also adapted to be moved in parallel rigid relation to each other upward and downward with the upwardly and downwardly .movable toolsupporting frame arm 27 in any desired vertical plane, or at any desired angle with re spect to a horizontal plane.

The point of the stylus is thus adapted to be moved into and out of contact with a pattern, drawing or design at any desired point, or to be moved over or while in contact with the surface of a pattern or design to be reproduced or copied, whether the surface is regular and uniform or irregular and varied in contour; and the tool is thus guided and caused to move concurrently with and in conformity with the movement of the point of the stylus in any and all directions as required.

A handle 427 is provided and secured to the stylus-supporting and tool-supporting member or frame arm 27, for operating the latter and thereby the stylus and tool concurrently in any and all directions upwardly and downwardly, horizontally or in any inclined direction with the stylus in engagement with a pattern and the tool in engagement with the work or object to be operated upon.

I claim:

In a mechanism of the class described, the combination of a horizontally movable carriage, a support for the same, means for guiding the carriage in a horizontal plane, a tool-supporting member pivotally mounted on the carriage and movable upward and downward upon a horizontal axis, a tool ro- 

